Improvement in sash-fasteners



JJW. THOMAS. Sash-Fastener.

No.210,1 67.' Patented'N ov.19,1878

'NITED STATES PATENT OFFICE.

JOHN W. THOMAS, OF TYRONE, PENNSYLVANIA.

lM PROVEM ENTIIN ,SASH-FASTENERS.

Specification forming part of Letters Patent No. 210,167, dated November19, 1878; application filed May 21, 1878.

To all whom it may concern: Be it known that I, JOHN W. THOMAS, ofTyrone, in the county of Blair and State of Pennsylvania, have inventedcertain new and useful Improvements in Sash-Locks and I do herebydeclare that the following is afull, clear, and exact descriptionthereof, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaeeompanyin g drawings, which form a part of this specification, and inwhich- Figure 1 is a side view of a window-casing with my improvedfastener applied thereto, and shown in section. Fig. 2 is a view of thelock or fastener itself in perspective, and Fig. 3 is aperspective Viewof the two parts forming the lock-case, showing the said partsdisconnected. Fig. 4 is a sectional view taken through the line as a: inFig. 1; and Fig. 5 is a sectional view, showing the key by which myimproved sash-fastener is operated.

Corresponding parts in the several figures are denoted by like letters.

My invention relates to that class of sash locks or fasteners in whichthe lockis inserted in a mortise in the window-casing, its bolt beingadapted to en gage in notches or recesses formed in the side rail of thesash to lock it in position.

This invention has reference to certain improvements upon the Patent No.192,529, and granted June 26, 187 7, to Stephen Rush, the object ofwhich is to render-the working of the lock or fastener more effective,to promote convenience of operation, and simplify the construction ofthe fastener; and it consists, primarily, in constructing or casting thelock or fastener case in two parts, and the manner of uniting the saidparts together; and, secondarily, in certain other details ofconstruction and arrangement of parts, substantially as hereinafter morefully set forth.

In the drawings, A refers to the loclr-casin g, which is cast orconstructed in two parts, a a. The part a, which is provided with thefastening-flange a, is cast or constructed open at one side, and at itsrear end, as shown in Fig. 3. The part a is cast or constructed open atone side also, but with its rear end closed and extended laterally, asat a", to close the opening in the rear end of the part a when the partsare brought together. In orderto lock the parts together, and to permitof their separation or detachabilit-y, the part a is provided with aslight elevation or stud, p, and the part a with a lateral stud orprojection, 0, entering an aperture, 07, in the part a.

The parts are put together by first inserting the lateral projection 0into the aperture d of part a, and then forcing the inner end of theclosed side of part a over the slight elevation 19 of the part a, whichwill lock them together.

To separate the parts, pry one end of the part a, and they will readilyspring apart.

This method of constructing and uniting the parts of the case obviatesthe providing of the same with screw or rivet openings and the use ofrivets or screws or similar fastenings heretofore employed for thatpurpose.

The case A is provided with a longitudinally andcentrally dividingpartition, A, formed with the part a to form the said case into twocompartments, B and B, one of which contains the locking-lever and theother the lockingleveractuating springs and earns.

O is the sash supporting or locking-lever, having bent arms 0 6, one ofwhich holds the lower sash in an elevated position, and the other, whenthe lever is turned ina reversed position, will secure it in a lockedposition when lowered. Of course this fastening is equally applicabletothe uppersash for holding it in a lowered position or looking itsecurely when not lowered. The lever O is hung upon an operating-shaft,D, .bearin g in the casing A, the shaft being feathered, as at f, whichfeather enters a slot I in the lever to cause the latter to turn withsaid shaft.

The part a of the case A; is also provided with a slot, f communicatingwith the aper= turef therein, which receives the end of shaft D. Thisslot is arranged so as to be out of line with the feather f on the saidshaft after the latter is in position in the case. By this arrangementthe shaft D is secured in its bear= ings without fastenings, such as arenow commonly used. Upon the opposite side of the partition A thelever-shaft D is provided with cams g against which is exerted the pressare of the springs h h, arranged in the com partment B of the case A,and having their ends held in place by the corner-pieces h h cast orotherwise aflixedto the case. To prevent the lateral displacement of thesprings, the shaft or spindle D is provided with arms i 27, constructedwith or otherwise applied to the said lever.

By thus duplicating the cams and springs, the operation or working ofthe fastener or lock is rendered more effective. It will not beoverlooked that notches are provided in the side rails or rails of thesash, which may be lined or plated, as shown, to receive the arms of thelever, or rather their points.

The extending portion of the shaft or spindle D is square, which permitsthe application ofacorrespondingly-shaped sleeve, H, which receives thesquare shaft of a key, E, to effect the operation of the lever 0. Bythis conneetion between the lever spindle or shaft D and itsoperating-key, the said spindle maybe made of a uniform length for allsizes of windows, as either the tube H or key-shaft may be adapted tothat end. Placed over the aperture through which the shaft or spindle Dis reached is an escutcheon, F, with two opposite slots, j j, to admitof thepassage through it of the feathers or nibs 7.; it upon the key E.

It will be observed that by lengthening either one of the feathers k kof the key-shaft or either one of the slots j in the eseutcheon F, andinserting the said key-shaft through the escutcheon, and turning thesaid key so as to bring the different-sized feathers and slots in a linewith each other, and then inserting the key-shaft in the barrel of thespindle D and securing the escutcheon in position, the key will beconnected to the above-mentioned parts, so as to prevent itsdetachability, and thus be always in readiness for operating the leverG.

From the foregoing it will be observed that convenience in operating thefastener is promoted, simplicity of construction is obtained, and theworking of the lock or fastener possessed of greater efliieiency.

Having thus described myinvention, I claim and desire to secure byLetters Patent of the United States 1. In a sash lock or fastener, thecase A, constructed in two parts, substantially as shown and described,one part, at, having an aperture, d, and a slight elevation, 19, and thepart a provided with a lateral projection or stud, a, substantially asand for the purpose set forth.

2. The combination, with the case A, having the shaft or spindle D,provided with the lever (l and cams g g, of the springs h h and the keyE, adapted to fit the spindle D and operate it and the lever O,substantially as and for the purpose set forth.

3. The combination, with the partition, of the two-part case A a a, saidpartition being provided with a slotted aperture, f of the lever O andits feather-shaft D, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixedm y signature in presence of two witnesses.

JOHN W. THOMAS.

